Sample
19 redditors with explicit opinion · 10 positive · 2 negative · 7 neutral
Score
0.603 — formula: 0.75 × % positive + 0.25 × pos/neg ratio
Confidence95% CI: 32–73% · the true approval rate falls in this range with 95% statistical confidence
Verdict
Recommended — ≥50% positive. Mixed but more good than bad.
Sources
r/Microneedling, r/redlighttherapy, r/30PlusSkinCare, r/tretinoin